JPH0512146B2 - - Google Patents
Info
- Publication number
- JPH0512146B2 JPH0512146B2 JP60042982A JP4298285A JPH0512146B2 JP H0512146 B2 JPH0512146 B2 JP H0512146B2 JP 60042982 A JP60042982 A JP 60042982A JP 4298285 A JP4298285 A JP 4298285A JP H0512146 B2 JPH0512146 B2 JP H0512146B2
- Authority
- JP
- Japan
- Prior art keywords
- belt
- ribbed
- unvulcanized
- nonwoven fabric
- rib
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229920001971 elastomer Polymers 0.000 claims description 31
- 239000005060 rubber Substances 0.000 claims description 31
- 239000004745 nonwoven fabric Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000000465 moulding Methods 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 9
- 238000004073 vulcanization Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 4
- 230000002159 abnormal effect Effects 0.000 description 9
- 239000000835 fiber Substances 0.000 description 7
- 239000010410 layer Substances 0.000 description 7
- 239000002344 surface layer Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 229920000297 Rayon Polymers 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002964 rayon Substances 0.000 description 3
- 244000043261 Hevea brasiliensis Species 0.000 description 2
- 229920000459 Nitrile rubber Polymers 0.000 description 2
- 239000004952 Polyamide Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 229920003052 natural elastomer Polymers 0.000 description 2
- 229920001194 natural rubber Polymers 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920002647 polyamide Polymers 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 229920002978 Vinylon Polymers 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- -1 or pulp Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G5/00—V-belts, i.e. belts of tapered cross-section
- F16G5/20—V-belts, i.e. belts of tapered cross-section with a contact surface of special shape, e.g. toothed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D29/00—Producing belts or bands
- B29D29/10—Driving belts having wedge-shaped cross-section
- B29D29/103—Multi-ribbed driving belts
Description
（産業上の利用分野）
本発明は、ベルト基帯に対して複数のリブ（突
条）がベルト長手方向において突設されたリブ付
Ｖベルトの製造方法に関するものである。
（従来の技術）
一般に、ベルト基帯に対して複数のリブがベル
ト長手方向において突設されたリブ付Ｖベルトが
知られている。そのようなリブ付Ｖベルトは、伝
動ベルトとして、例えば家庭用乾燥機において小
径のリブ溝プーリと大径の平プーリ（ドラム）と
に巻回して用いられる。
上記リブ付Ｖベルトは、リブ外表面に帆布を付
設すると、製造上リブが突出し難いことから、リ
ブを帆布で被覆することなくゴムのみで製造して
いるのが通例である。
（発明が解決しようとする課題）
そのため、上述した如き家庭用乾燥機に用いた
場合、リブ側面の摩擦係数が大きくなり、起動時
及びストツプ時（過負荷時）並びに、気温が０℃
以下となる冬場、ベルト走行50時間以上経過した
ときなどに異音を発生させるという問題がある。
また、リブに短繊維を混入して摩擦係数を小さく
する技術が知られているが、屈曲性が低下するの
で、小径のリブ溝プーリには小さい曲率半径でも
つて屈曲状態で繰り返し係合すると、リブに早期
亀裂が発生するという別の問題がある。
また、特公昭42−2066号公報において、リブ外
表面に、帆布に代えて、微細、密なかつ短い繊維
からなる繊維毛屑を堆積かつ接着したリブ付Ｖベ
ルトが提案されているが、リブ外表面において繊
維を一様に付着させることが困難で品質上問題が
あるとともに、多くの製造工数を有し、コスト高
になる。
本発明は、異音の発生を防止することができる
リブＶ付ベルトを容易に製造することができるリ
ブ付Ｖベルトの製造方法を提供することを目的と
する。
（課題を解決するための手段）
本発明は、ベルト基帯に対し複数のリブがベル
ト長手方向に沿つて突設されたリブ付Ｖベルトの
製造方法の改良に係るものである。
本発明製造方法は、ベルト基帯に対し複数のリ
ブがベルト長手方向に沿つて突設されたベルトの
製造方法であつて、成形金型に外嵌されたゴムス
リーブの外周面上に、帆布、未加硫ゴムシート、
抗張体、別の未加硫ゴムシートおよび、不織布ま
たは不織紙を順に巻き付けて円筒状の未加硫成形
体を形成し、その後、未加硫成形体を成形金型お
よびゴムスリーブより取外し、該未加硫成形体
を、リブ溝を有する加硫金型に対して、該リブ溝
に不織布または不織紙が臨むように適用して加硫
成形を行うことを特徴とする。上記不織布又は不
織紙は、例えばポリエステル、ポリアミド、レー
ヨン、ビニロン、セルロース、パルプ等の合成繊
維、人造繊維、天然繊維の単体またはそれらのブ
レンドが用いられる。その厚さは0.01〜0.03mm程
度で、単位重量（目付量）は３〜100g／m2であ
る。
（作用）
成形金型に外嵌されたゴムスリーブの外周面上
に、帆布、未加硫ゴムシート、抗張体、別の未加
硫ゴムシートおよび、不織布または不織紙を順に
巻き付けて円筒状の未加硫成形体が形成される。
その後、上記未加硫成形体が成形金型およびゴム
スリーブより取外される。上記未加硫成形体を、
リブ溝を有する加硫金型に対して、該リブ溝に不
織布または不織紙を臨むように適用して加硫成形
が行われる。この加硫成形時に、不織布または不
織紙に無理な力が作用すると、必然的に不織布ま
たは不織紙は破れながらリブ表面に沿い、最終的
にリブ表面に加硫接着されることとなる。
（実施例）
以下、本発明の実施例を図面に沿つて詳細に説
明する。
第１図において、１は本発明製造方法によつて
製造されるリブ付Ｖベルトで、ベルト基帯２に対
し複数のリブ３がベルト長手方向に沿つて突設さ
れている。
４は上帆布層で、例えば２層の綿帆布が積層さ
れてなる。
５は抗張体層で、抗張体コード６（例えばポリ
エステルコード、ガラスコード、芳香族ポリアミ
ドコード等）が接着ゴム７（例えば天然ゴム、ク
ロロプレンゴム、スチレンナタジエンゴム、イン
プレンゴム、ニトリルブタジエンゴム、またはそ
れらのブレンドゴム）中に埋設されている。
８はリブゴム層で、例えば天然ゴム、クロロプ
レンゴム、スチレンナタジエンゴム、インプレン
ゴム、ニトリルブタジエンゴム、またはそれらの
ブレンドゴムからなり、その一部がリブ３を形成
している。
９は不織布または不織紙からなる一様密度の表
面層で、リブ３の外表面に設けられている。
続いて、上記リブ付Ｖベルト１の製造方法につ
いて説明する。
（工程 １）
先ず、従来より周知のリブ付Ｖベルトの成形方
法と同様に、成形金型１１の外側に円筒状のゴム
スリーブ１２を外嵌する。
（工程 ２）
工程１で外嵌したゴムスリーブ１２の外周面上
に上帆布層４となる綿帆布４ａ、接着ゴム７とな
る比較的薄い未加硫ゴムシート１３、抗張体コー
ド６およびリブゴム層８となる比較的厚い別の未
加硫ゴムシート１４を順に巻付け、その後、その
上に、表面層９となる不織布１５をベルト長手方
向（円周方向）に巻き付けて未加硫成形体１６を
形成する（第２図参照）。
（工程 ３）
工程２の成形終了後、成形金型１１よりゴムス
リーブ１２とともに未加硫成形体１６を取り外
し、それから、ゴムスリーブ１２より未加硫成形
体１６を取り外す。
（工程 ４）
内周面にリブ溝１７ａが形成された筒状の加硫
金型１７に対し、第３図に示すように、未加硫成
形体１６の不織布１５がリブ溝１７ａに臨むよう
に該未加硫成形体１６を装入し、内側（すなわち
綿帆布４ａ側）に加硫スリーブ１８を適用する。
しかして、加熱加圧により加硫スリーブ１８の内
側より熱と圧力を加え、第４図に示すようにリブ
を突出させてベルト全体を加硫成形する。この場
合、不織布１５は、織成された強度のある帆布と
は異なり、リブの突出変形を妨げることはない。
すなわち、加硫成形時において、不織布がリブの
突出変形を妨げるようになり不織布に無理な力が
作用すると、不織布自体の強度が弱いことから、
不織布が破れながらリブ表面に沿うようになり、
リブ表面に加硫接着される。
（工程 ５）
工程４で加硫成形された筒状の加硫成形体１９
を加硫スリーブ１８より取外し、所定のリブ数と
なるように幅切りを行い、所望のリブ付Ｖベルト
１を得る。
次いで、本発明例のリブ付Ｖベルト１（第１図
参照）と、第１および第２比較例のリブ付Ｖベル
ト２１，３１（第５図および第６図参照）とに対
して行つた試験につい説明する。
試験ベルト
第１比較例のリブ付Ｖベルト２１は、本発明例
のリブ付Ｖベルト１とは表面層９を備えていない
点で異なる。第２比較例のリブ付Ｖベルト３１
は、本発明例のリブ付Ｖベルト１とは、表面層９
を備えずかつリブゴム層３２中にポリアミド繊維
３３（２デニール、１mmカツトしたもの）が体積
含有率８％でもつて混入されている点で異なる。
寸法は、第１図、第５図および第６図において
L1＝4.8mm，L2＝2.3mm，L3＝2.0mm，L4＝0.97mm，
L5＝1.6mm，θ＝40°、ベルト全長は2210mmで、リ
ブは３つである。
なお、本発明例のリブ付Ｖベルト１の表面層９
は、パルプをレーヨンの混合繊維（パルプ15重量
％、レーヨン85重量％）で、単位重量が14g／m2
である。
試験方法
(i) 異音試験
第７図に示す駆動系を有する乾燥機に用いて行
つた。すなわち、ドラム４１（直径600mm）、モー
タプーリ４２（直径17mm、回転数1650rpm）およ
びフアンプーリ４３（直径10mm）に試験ベルト４
４を巻回し、アイドルプーリ４５，４６（直径40
mm）に適用し、乾布3.0Kgｆの負荷でもつて走行
させた。
しかして、50時間走行後、室温５℃の室内に15
時間放置後、起動時およびストツプ時の異音の発
生について調べた。
(ii) 摩擦係数測定試験
第８図に示すように、ロードセル５１より駆動
側プーリ５２（直径14mm、回転数72rpm）に角度
α（rad）でもつて試験ベルト５３を巻付け、デ
ツドウエイトDW1＝1.75Kgｆを加えた。
しかして、ロードセル５１の測定値Ｔを測定
し、
μ＝ｎ（Ｔ／DW2）／α
により、摩擦係数μを計算した。
(iii) 摩擦試験
第９図に示すように、平プーリ６１（直径４０
mm）とリブ溝付プーリ６２（直径14mm、回転数
4800rpm）との間に試験ベルト６３を巻回し、平
プーリ６１にデツドウエイDW＝＝18Kgｆを加え
た状態で24時間走行させた後、摩耗量を測定し
た。
摩耗量＝｛（初期重量）−（24時間走行後重
量）｝／（リブゴム比重）
(iv) 多軸屈曲試験
第１０図に示すように、６つの平プーリ７１
（直径76mm）と、駆動側リブ溝プーリ７２（直径
16.5mm、回転数1780rpm）と、６つの従動側リブ
溝プーリ７３（直径16.5mm）とに試験ベルト７４
を多軸屈曲させて巻回し、デツドウエイトDW3
＝13.5Kgｆを加え、その状態で走行させ、リブに
亀裂が発生するまでの時間を測定した。
試験結果
試験結果は、次表に示す通りである。
(Industrial Field of Application) The present invention relates to a method for manufacturing a ribbed V-belt in which a plurality of ribs (projections) are provided protruding from a belt base belt in the longitudinal direction of the belt. (Prior Art) Generally, a ribbed V-belt is known in which a plurality of ribs are provided protruding from a belt base band in the belt longitudinal direction. Such a ribbed V-belt is used as a power transmission belt, for example, in a domestic dryer by being wound around a small-diameter rib groove pulley and a large-diameter flat pulley (drum). The above-mentioned ribbed V-belt is usually manufactured only from rubber without covering the ribs with canvas, since it is difficult for the ribs to protrude if canvas is attached to the outer surface of the ribs. (Problem to be Solved by the Invention) Therefore, when used in a household dryer as described above, the friction coefficient of the side surface of the rib becomes large, and the friction coefficient at the time of startup and stop (overload), and when the temperature is 0°C.
There is a problem that abnormal noises are generated during the winter when the belt has been running for more than 50 hours.
In addition, there is a known technique to reduce the coefficient of friction by mixing short fibers into the ribs, but this reduces the flexibility, so if a pulley with a small diameter rib groove has a small radius of curvature and repeatedly engages in a bent state, Another problem is premature cracking of the ribs. In addition, in Japanese Patent Publication No. 42-2066, a ribbed V-belt is proposed in which fiber waste consisting of fine, dense, and short fibers is deposited and adhered to the outer surface of the rib instead of canvas. It is difficult to uniformly attach fibers to the surface, which poses a quality problem, and requires a large number of manufacturing steps, resulting in high costs. An object of the present invention is to provide a method for manufacturing a ribbed V-belt that can easily manufacture a ribbed V-belt that can prevent the generation of abnormal noise. (Means for Solving the Problems) The present invention relates to an improvement in a method for manufacturing a ribbed V-belt in which a plurality of ribs are provided protruding from a belt base belt along the belt longitudinal direction. The manufacturing method of the present invention is a method for manufacturing a belt in which a plurality of ribs are provided protruding from a belt base belt along the belt longitudinal direction, and the manufacturing method is a belt manufacturing method in which a canvas , unvulcanized rubber sheet,
A cylindrical unvulcanized molded body is formed by wrapping the tensile body, another unvulcanized rubber sheet, and nonwoven fabric or paper in order, and then the unvulcanized molded body is removed from the molding die and the rubber sleeve. , the unvulcanized molded article is applied to a vulcanization mold having rib grooves so that the nonwoven fabric or nonwoven paper faces the rib grooves, and vulcanization molding is performed. The above-mentioned nonwoven fabric or paper may be a single synthetic fiber, an artificial fiber, or a natural fiber such as polyester, polyamide, rayon, vinylon, cellulose, or pulp, or a blend thereof. Its thickness is about 0.01 to 0.03 mm, and its unit weight (area weight) is 3 to 100 g/m 2 . (Function) A canvas, an unvulcanized rubber sheet, a tensile material, another unvulcanized rubber sheet, and nonwoven fabric or paper are wound in order on the outer peripheral surface of the rubber sleeve fitted onto the molding die to form a cylinder. A shaped unvulcanized body is formed.
Thereafter, the unvulcanized molded body is removed from the mold and the rubber sleeve. The above unvulcanized molded body,
Vulcanization molding is performed by applying a nonwoven fabric or paper to a vulcanization mold having rib grooves so that the nonwoven fabric or paper faces the rib grooves. If an unreasonable force is applied to the nonwoven fabric or paper during vulcanization, the nonwoven fabric or paper will inevitably tear along the rib surface, and will eventually be vulcanized and bonded to the rib surface. (Example) Hereinafter, an example of the present invention will be described in detail with reference to the drawings. In FIG. 1, reference numeral 1 denotes a ribbed V-belt manufactured by the manufacturing method of the present invention, in which a plurality of ribs 3 are provided protruding from a belt base band 2 along the belt longitudinal direction. Reference numeral 4 denotes an upper canvas layer, which is made of, for example, two layers of cotton canvas laminated. 5 is a tensile material layer, in which a tensile material cord 6 (e.g., polyester cord, glass cord, aromatic polyamide cord, etc.) is coated with adhesive rubber 7 (e.g., natural rubber, chloroprene rubber, styrene-natadiene rubber, imprene rubber, nitrile-butadiene rubber). , or their blend rubber). A rib rubber layer 8 is made of, for example, natural rubber, chloroprene rubber, styrene-natadiene rubber, in-prene rubber, nitrile-butadiene rubber, or a blend thereof, and a portion thereof forms the rib 3. Reference numeral 9 denotes a uniform density surface layer made of nonwoven fabric or nonwoven paper, and is provided on the outer surface of the rib 3. Next, a method for manufacturing the ribbed V-belt 1 will be explained. (Step 1) First, a cylindrical rubber sleeve 12 is fitted onto the outside of a molding die 11 in the same manner as in the conventionally known molding method of a ribbed V-belt. (Step 2) On the outer circumferential surface of the rubber sleeve 12 fitted in Step 1, a cotton canvas 4a that will become the upper canvas layer 4, a relatively thin unvulcanized rubber sheet 13 that will become the adhesive rubber 7, a tensile body cord 6, and rib rubber are placed. Another relatively thick unvulcanized rubber sheet 14, which will become the layer 8, is wound in order, and then a nonwoven fabric 15, which will become the surface layer 9, is wound in the longitudinal direction (circumferential direction) of the belt to form an unvulcanized molded body. 16 (see Figure 2). (Step 3) After the molding in Step 2 is completed, the unvulcanized molded body 16 is removed together with the rubber sleeve 12 from the molding die 11, and then the unvulcanized molded body 16 is removed from the rubber sleeve 12. (Step 4) As shown in FIG. 3, the cylindrical vulcanization mold 17 with rib grooves 17a formed on its inner peripheral surface is heated so that the nonwoven fabric 15 of the unvulcanized molded body 16 faces the rib grooves 17a. The unvulcanized molded body 16 is placed in the container, and the vulcanized sleeve 18 is applied to the inside (ie, the cotton canvas 4a side).
Heat and pressure are then applied from the inside of the vulcanizing sleeve 18 by heating and pressurizing, causing the ribs to protrude as shown in FIG. 4, thereby vulcanizing the entire belt. In this case, the nonwoven fabric 15 does not hinder the protruding deformation of the ribs, unlike a strong woven canvas.
In other words, during vulcanization molding, if the nonwoven fabric prevents the protruding deformation of the ribs and excessive force is applied to the nonwoven fabric, the strength of the nonwoven fabric itself is weak.
The nonwoven fabric begins to tear and follow the rib surface,
Vulcanized and bonded to the rib surface. (Step 5) Cylindrical vulcanized body 19 vulcanized in Step 4
is removed from the vulcanized sleeve 18, and the width is cut to a predetermined number of ribs to obtain the desired ribbed V-belt 1. Next, tests were carried out on the ribbed V-belt 1 of the present invention example (see FIG. 1) and the ribbed V-belts 21 and 31 of the first and second comparative examples (see FIGS. 5 and 6). Explain the test. Test Belt The ribbed V-belt 21 of the first comparative example differs from the ribbed V-belt 1 of the invention example in that it does not include the surface layer 9. Ribbed V-belt 31 of second comparative example
The ribbed V-belt 1 of the example of the present invention has a surface layer 9
The difference is that polyamide fibers 33 (2 denier, 1 mm cut) are mixed in the ribbed rubber layer 32 at a volume content of 8%. Dimensions are shown in Figures 1, 5 and 6.
L 1 = 4.8mm, L 2 = 2.3mm, L 3 = 2.0mm, L 4 = 0.97mm,
L 5 = 1.6 mm, θ = 40°, the total length of the belt is 2210 mm, and there are three ribs. Note that the surface layer 9 of the ribbed V-belt 1 of the example of the present invention
The pulp is a mixed fiber of rayon (15% by weight of pulp, 85% by weight of rayon), and the unit weight is 14g/m 2
It is. Test method (i) Abnormal noise test A dryer having the drive system shown in Figure 7 was used. That is, the test belt 4 is attached to the drum 41 (diameter 600 mm), motor pulley 42 (diameter 17 mm, rotation speed 1650 rpm), and fan pulley 43 (diameter 10 mm).
4 and idle pulleys 45 and 46 (diameter 40
mm) and was run under a load of 3.0 kgf. However, after running for 50 hours, 15
After leaving it for some time, we investigated the occurrence of abnormal noises when starting and stopping. (ii) Friction coefficient measurement test As shown in Figure 8, the test belt 53 is wound around the drive pulley 52 (diameter 14 mm, rotation speed 72 rpm) from the load cell 51 at an angle α (rad), and dead weight DW 1 = 1.75. Added Kgf. Thus, the measured value T of the load cell 51 was measured, and the friction coefficient μ was calculated from μ=n(T/DW 2 )/α. (iii) Friction test As shown in Figure 9, flat pulley 61 (diameter 40
mm) and rib grooved pulley 62 (diameter 14 mm, rotation speed
A test belt 63 was wound between the flat pulley 61 (4800 rpm) and the flat pulley 61 was run for 24 hours with a dead weight DW of 18 Kgf, and then the amount of wear was measured. Amount of wear = {(Initial weight) - (Weight after running for 24 hours)}/(Rib rubber specific gravity) (iv) Multi-axis bending test As shown in Figure 10, six flat pulleys 71
(diameter 76 mm) and drive side rib groove pulley 72 (diameter
16.5 mm, rotation speed 1780 rpm) and the test belt 74 on the six driven side rib groove pulleys 73 (diameter 16.5 mm).
The dead weight DW 3 is wound by bending it on multiple axes.
= 13.5Kgf was applied, the vehicle was run in that state, and the time until cracks appeared in the ribs was measured. Test results The test results are shown in the table below.
【表】
ただし、異音は、×印が起動時およびストツプ
時にキユツという異音あり、△印が異音がかすか
にあり、○印が異音なしである。また、摩擦係数
μは第１比較例が基準で100とし、指数表示した。
したがつて、上記試験結果より、リブ表面を不
織布（または不織紙）で構成することによつてプ
ーリとベルトの摺動面の摩擦係数μを下げ、この
ことにより、乾燥機等において、起動時およびス
トツプ時（過負荷時）等に滑かなスリツプをさ
せ、異音をなくすことができる。また、磨耗に対
しても、リブ表面を不織布（または不織紙）で構
成することによつて、耐摩耗性を向上させること
ができる。
なお、本発明製造方法によつて製造されたリブ
付Ｖベルトは、上述した乾燥機用ベルトのほか、
自動車における補機駆動用ベルト、洗濯機用ベル
トなど各種のリブ付Ｖベルトに用いることができ
る。
（発明の効果）
本発明は、強度的に弱い不織布または不織紙を
リブの表面層とし、該不織布または不織紙をリブ
溝に臨ませて加硫成形するようにしているので、
織布を用いた場合に比べて、リブの突出変形が無
理なく行われ、成形性よく、リブ付Ｖベルトを容
易に製造することができる。また、リブの表面層
を不織布または不織紙で構成することになるの
で、屈曲性を損なうことなく、摩擦係数を低下さ
せ、異音の発生を防止し、耐摩耗性の向上したリ
ブ付Ｖベルトを容易に製造することができる。[Table] However, regarding abnormal noises, an x mark indicates a clicking noise when starting and stopping, a △ mark indicates a slight abnormal noise, and an ○ mark indicates no abnormal noise. Further, the friction coefficient μ was set to 100 based on the first comparative example, and was expressed as an index. Therefore, from the above test results, by constructing the rib surface with non-woven fabric (or non-woven paper), the friction coefficient μ of the sliding surface of the pulley and belt can be lowered. This allows for smooth slippage and eliminates abnormal noise when the load is turned off and stopped (overloaded). Furthermore, by forming the rib surface with nonwoven fabric (or nonwoven paper), wear resistance can be improved. Note that the ribbed V-belt manufactured by the manufacturing method of the present invention can be used not only as the dryer belt described above, but also as a belt for dryers.
It can be used in various ribbed V-belts such as belts for driving auxiliary equipment in automobiles and belts for washing machines. (Effects of the Invention) In the present invention, a nonwoven fabric or nonwoven paper with weak strength is used as the surface layer of the rib, and the nonwoven fabric or nonwoven paper is vulcanized and molded so as to face the rib groove.
Compared to the case where a woven fabric is used, the ribs can be deformed to protrude easily, have good moldability, and can easily produce a ribbed V-belt. In addition, since the surface layer of the ribs is made of nonwoven fabric or paper, the ribbed V with improved wear resistance reduces the coefficient of friction, prevents noise, and improves wear resistance without impairing flexibility. The belt can be manufactured easily.
第１図は本発明製造方法によつて製造されるリ
ブ付Ｖベルトの一例の縦断面図である。第２図な
いし第４図は本発明の一実施例であるリブ付Ｖベ
ルトの製造方法の説明図である。第５図は第１比
較例のリブ付Ｖベルトの縦断面図、第６図は第２
の比較例のリブ付Ｖベルトの縦断面図である。第
７図は異音試験に用いたシステムの説明図、第８
図は摩擦係数測定試験に用いたシステムの説明
図、第９図は摩耗試験に用いたシステムの説明
図、第１０図は多軸屈曲試験に用いたシステムの
説明図である。
１……リブ付Ｖベルト、２……ベルト基帯、３
……リブ、４ａ……綿帆布、６……抗張体コー
ド、１１……成形金型、１２……ゴムスリーブ、
１３，１４……未加硫ゴムシート、１５……不織
布、１６……未加硫成形体、１７……加硫金型、
１７ａ……リブ溝。
FIG. 1 is a longitudinal sectional view of an example of a ribbed V-belt manufactured by the manufacturing method of the present invention. FIGS. 2 to 4 are explanatory diagrams of a method of manufacturing a ribbed V-belt according to an embodiment of the present invention. FIG. 5 is a vertical cross-sectional view of the ribbed V-belt of the first comparative example, and FIG.
FIG. 3 is a longitudinal cross-sectional view of a ribbed V-belt of a comparative example. Figure 7 is an explanatory diagram of the system used for the abnormal noise test, Figure 8
FIG. 9 is an explanatory diagram of the system used in the friction coefficient measurement test, FIG. 9 is an explanatory diagram of the system used in the wear test, and FIG. 10 is an explanatory diagram of the system used in the multiaxial bending test. 1... Ribbed V-belt, 2... Belt base band, 3
... Rib, 4a ... Cotton canvas, 6 ... Tensile cord, 11 ... Molding mold, 12 ... Rubber sleeve,
13, 14... Unvulcanized rubber sheet, 15... Nonwoven fabric, 16... Unvulcanized molded body, 17... Vulcanized mold,
17a...Rib groove.
Claims (1)
向に沿つて突設されたベルトの製造方法であつ
て、 成形金型に外嵌されたゴムスリーブの外周面上
に、帆布、未加硫ゴムシート、抗張体、別の未加
硫ゴムシートおよび、不織布または不織紙を順に
巻き付けて円筒状の未加硫成形体を形成し、 その後、未加硫成形体を成形金型およびゴムス
リーブより取外し、 該未加硫成形体を、リブ溝を有する加硫金型に
対して、該リブ溝に不織布または不織紙が臨むよ
うに適用して加硫成形を行うことを特徴とするリ
ブ付Ｖベルトの製造方法。[Scope of Claims] 1. A method for manufacturing a belt in which a plurality of ribs are provided protruding from a belt base band along the belt longitudinal direction, comprising: on the outer circumferential surface of a rubber sleeve externally fitted in a molding die; A canvas, an unvulcanized rubber sheet, a tensile material, another unvulcanized rubber sheet, and a nonwoven fabric or paper are wound in order to form a cylindrical unvulcanized molded body, and then the unvulcanized molded body is wrapped. The unvulcanized molded body is removed from the molding mold and the rubber sleeve, and the unvulcanized molded body is applied to a vulcanization mold having rib grooves so that the nonwoven fabric or paper faces the rib grooves, and vulcanization molding is performed. A method for manufacturing a ribbed V-belt, characterized by:
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60042982A JPS61199935A (en) | 1985-03-04 | 1985-03-04 | Manufacture of ribbed v-belt |
| US06/855,978 US4747812A (en) | 1985-03-04 | 1986-04-25 | V-ribbed belt and the method of manufacturing the same |
| US07/124,524 US4892510A (en) | 1985-03-04 | 1987-11-24 | V-ribbed belt and the method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60042982A JPS61199935A (en) | 1985-03-04 | 1985-03-04 | Manufacture of ribbed v-belt |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61199935A JPS61199935A (en) | 1986-09-04 |
| JPH0512146B2 true JPH0512146B2 (en) | 1993-02-17 |
Family
ID=12651240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60042982A Granted JPS61199935A (en) | 1985-03-04 | 1985-03-04 | Manufacture of ribbed v-belt |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US4747812A (en) |
| JP (1) | JPS61199935A (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6352488B1 (en) * | 1999-03-05 | 2002-03-05 | The Goodyear Tire & Rubber Company | Power transmission belt |
| CA2313421A1 (en) | 1999-08-26 | 2001-02-26 | The Goodyear Tire & Rubber Company | Power transmission belt |
| CN1270113C (en) | 2001-04-10 | 2006-08-16 | 盖茨公司 | Power transmission belt |
| US6609990B2 (en) * | 2001-07-18 | 2003-08-26 | The Gates Corporation | Power transmission belt and method |
| JP5058886B2 (en) * | 2007-12-18 | 2012-10-24 | 三ツ星ベルト株式会社 | Friction transmission belt |
| FR2936291B1 (en) | 2008-09-23 | 2011-06-03 | Hutchinson | POWER TRANSMISSION BELT. |
| DE102010043322A1 (en) * | 2010-11-03 | 2012-05-03 | Arntz Beteiligungs Gmbh & Co. Kg | Drive belt for transmitting a drive movement and method for producing a drive belt |
| CN103998817B (en) * | 2011-12-14 | 2015-07-01 | 阪东化学株式会社 | Friction transmission belt and method for manufacturing the same |
| WO2017168920A1 (en) * | 2016-03-30 | 2017-10-05 | バンドー化学株式会社 | Method for manufacturing belt and cylindrical mold and bridging device used therefor |
| JP7323560B2 (en) * | 2021-01-29 | 2023-08-08 | バンドー化学株式会社 | friction transmission belt |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52113452A (en) * | 1976-03-19 | 1977-09-22 | Dayco Corp | Endless transmission belt and method of producing same |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1550983A (en) * | 1924-04-18 | 1925-08-25 | Fisk Rubber Co | Fan belt |
| US3839116A (en) * | 1973-09-10 | 1974-10-01 | Dayco Corp | Method of making endless power transmission belt having a plurality of longitudinally extending ribs |
| US4047446A (en) * | 1976-06-14 | 1977-09-13 | Dayco Corporation | Endless power transmission belt |
| US4509938A (en) * | 1981-09-17 | 1985-04-09 | Dayco Corporation | Endless power transmission belt having a toothed compression section and method of making the same |
| US4501771A (en) * | 1982-02-22 | 1985-02-26 | Dayco Corporation | Elastomer-coated bias reinforcement fabric and method for producing same |
-
1985
- 1985-03-04 JP JP60042982A patent/JPS61199935A/en active Granted
-
1986
- 1986-04-25 US US06/855,978 patent/US4747812A/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52113452A (en) * | 1976-03-19 | 1977-09-22 | Dayco Corp | Endless transmission belt and method of producing same |
Also Published As
| Publication number | Publication date |
|---|---|
| US4747812A (en) | 1988-05-31 |
| JPS61199935A (en) | 1986-09-04 |
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| LAPS | Cancellation because of no payment of annual fees |